Update identity_management.rst: Content

Some blurbs about Active Directory & LDAP. I apologize if the build
fails again, but I'm having some trouble getting sphinx working.
Formatting Changes

Fixed the links and bulleted lists. Successfully ran make HTML with 0
warnings or errors.
Update backups.rst
Python syntax and variables
Briefly flesh out Virtualization 101.

Add mention of private and public cloud, as well as defining terms.
Lists and Dictionaries

Added descriptions and examples for lists and dictionaries.
Basic function definitions and usage
Merge remote-tracking branch 'upstream/master'
adding rewards paragraph
Fixed some typos in netbooting.rst
Merge pull request #147 from pdaukintis/syntax-fixes

Fixed some typos in netbooting.rst
Merge pull request #146 from avleen/introduction

adding rewards paragraph
Adding some basic nagios information.
toctree needs a blank line before content
Merge pull request #149 from GlenKaukola/master

toctree fix
Fixes typo, removes 80 char word wrap.
fixes line breaks, and removes additional comma
Merge pull request #148 from gpapilion/monitoring

Nagios information for monitoring_101
Updates later paragraphs to current style
Merge pull request #150 from gpapilion/monitoring_101_style_changes

Updates later paragraphs to current style